# Check status of eth0

lspci |grep Ethernet
dmesg |grep eth0
ethtool eth0
ethtool -k eth0
ethtool -S eth0

# Force 1000Mbps and full duplex on eth0

ethtool -s eth0 speed 1000 duplex full autoneg off

(Under CentOS / RHEL)

To make the changes permanent, edit /etc/sysconfig/network-scripts/ifcfg-eth0, add

ETHTOOL_OPTS="speed 1000 duplex full autoneg off"

Reference:

1. Adrenalin’s Experience

Last Update 2016/10/14 17:32:15 +0900